// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.apache.doris.nereids.trees.expressions.functions;

/**
 * Nondeterministic functions.
 * <p>
 * e.g. 'rand()', 'random()'.
 */
public interface Nondeterministic extends ExpressionTrait {

    /**
     * Identify the function is deterministic or not, such as UnixTimestamp, when it's children is not empty
     * it's deterministic
     */
    default boolean isDeterministic() {
        return false;
    }
}
